Shuttle attachment.



1. BOLTON & H, DEFORGEL suume ATTACHMENT. APPLICATION F ILED JAN 18. 1917.

.1,237,236.- .Patememug.1 4,1917;1

JAMES BoLToN AND HENRY\1)EFORGE,QQF FITCHBURG, MASSACHUSETTS.

SHUTTLE A TACHMENT. I

' Specification of Letters Patent.

Application filed January 18, 1917. Serial No. 143,159.

To all whom it may concern:

.Be it known that we, JAMES BOLTON and HENRY Dnronen, citizens of the United States, residing at Fitchburg, in the county of WVorcester and State of Massachusetts,

have invented anew and useful Shuttle Attachment, ofwhich thefollowing is a specitrally and firmly in position on a cop spindle; to provide said attachment in such form as to accomplish this purpose simply and efiiciently; and to provide readily detach.- able means for securing the attachment to the spindle. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which- Figure 1 is a side view of a shuttle with .a preferred form of this invention applied to the spindle thereof, showing the spindle in its outermost position and the bobbin in section- Fig. 2 is aside view of the shuttle spindle;

Fig. 3 is a similar view of the attachment, and

Fig. 4 is a plan of the attachment looking in the direction of the arrow 3 in Fig. 2.

This invention is designed to be applied to a shuttle 10 of ordinary type having a spindle 11, preferably of the spring type designed to hold an ordinary cop. It is well known in practice that shuttles of this kind are employed for both cops and bobbins, but' that the spindles, although usually sl1t When a bobbin is applied the same is held in position eccentrically and loosely. This permits the bobbin to shake around loosely on the spindle and often creates bad work in the use of the device. This invention 1s designed to be applied especially to that kind of spindle. although capable of generalnse.

Referring further to the drawings it is to be observed that the mechanism for hold ing the spindle in its two extreme positions is not illustrated in detail because any desired means can be used for that purpose.

The spindle, however, is modified to a oer tain extent over the ordinary structure because it is cut out=at 18 to provide a notch having a square shoulder at the upper end, the surface of the notch slanting awaybe low it. This is the only modification of the existing form of spindle and its connected parts that is required.

The attachment itself as shown here com prises a tubular member 15 having a cylindrical'butt end at 16 providedwith a pair of integral transverse projections 17 for engaging in the notches a usually found in a bobbin'A. The upper end of this attachment is shown as contracted at 18 to facilitate its entry into the large end of the bobbin. It ispreferredto cut away the attachment about half way through the same to expose theinteriorpassage at. 19, this cut away portion extending throughout a large part of-theattachment.

This attachment can be made of sheet stockandfis so shown in the drawings, the projections 17 being cut from the stock and bent' outwardly, and the contraction at 18* being providedby slitting in the end, bending the tongues between the slits inwardly, and turning or grinding off the surface.

The tub'ula-rmember- 15 is further pro'-= vided with a flat steel spring or holding member 20. This can be applied to it in any desired way and can be made of any desired material other than steel. It is shownin the drawings as attached by providing it with a tang 21 ofa general cross shape integral with it and having its transnan- STATES P TE amming. .14, 19117.

verse projections entering into notches in inserted. These parts can be spot-welded or otherwise secured together and a spring can be used formed of non-metallic material.

Withthis construction it will be seen that a cop can be applied to the spindle inthe usual way without the use'of this attachment, and'the shuttle used as has been the custom heretofore. But when a bobbin A is to be used the attachment is simply slipped on until the spring 20 catches into the notch 13. to hold the attachment in position. Then the bobbin is placed on it and turned until its notches a receive the projections. 17 when it is found that the bobbin is centered onthe' spindle, because the attachment is substantially of the diameter of the passage through the bobbin. Different sized attachments can be used for bobbins of differentconstruction.

In this way it will be seen that the bobbin cannot vibrate materially on this device, but that it is accurately centered and that consequently it will feed the yarn uniformly and without as much liability/to breakage as has been the case heretofore. After the bobbin is removed and it is desired to change the loom over to run cops the attachment is very readily detached from the spindle by turning it on its .own axis until the spring is released from the notch 13 when the attachment canbe drawn oif very readily. Up to that time, however, it is to be observed that the spring and notch, having straight surfaces in engagement with each other, hold the tubular attachment against turning on the spindle accidentally. It is also to be seen that the large part of the-bobbin will come into concentric position with relation to the usual projecting plate at the bottom of the spindle.

Although we have illustrated and de-' scribed only a single form of the invention and shown only one size and construction thereof we are aware of the fact that modifications can be made therein by anyperson skilled in the art without departing from the scope of the invention as expressed in the-claims. Therefore we, :do not wish to be limited to all the details of construction herein shown and described nor to the parsaid attachment being provided with means for engaging in the notch to hold the .at-

tachment on the spindle, said means being adapted to be released from the spindle by the turning of the attachment thereon.

2. As an article of manufacture, an attachment for a shuttle spindle of a general tubular shape adapted to fit the inside of a bobbin. and provided with a spring for detachably holding it onthe spindle, said spring having opposite projections and the attachment a pair of slits receiving the edges of said projections to hold the spring.

' 3. As an article of manufacture, a tubular attachment for a shuttle spindle adapted to fit the inside of a bobbin and provided with means for holding it on the spindle, and having transverse projections at its butt end for engaging in notches in the bobbin.

4. The combination with a shuttle spindle having a notch therein, of an attachment therefor for holding a bobbin provided with a spring for engaging in said notch to hold theattachment on the spindle, said attach- -ment being adapted to be turned on the.

spindle to release the spring from the notch. In testimony whereof we have hereunto aflixed our slgnatures.

JAMES BOLTON.

HENRY. nnroncn Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

